<template>
<div>
  <div class="shopcart">
    <div class="content">
      <div class="content-left" @click="toggleShow">
        <div class="logo-wrapper">
          <div class="logo" :class="{highlight:totalCount>0}">
            <i class="iconfont icon-shopping_cart" :class="{highlight:totalCount>0}"></i>
          </div>
          <div class="num" v-show="totalCount>0">{{totalCount}}</div>
        </div>
        <div class="price highlight" :class="{highlight:totalCount>0}">￥{{totalPrice}}</div>
        <div class="desc">另需配送费￥{{info.deliveryPrice}}元</div>
      </div>
      <div class="content-right">
        <div class="pay" :class="payClass">
            {{payText}}
          <!-- 还差￥10元起送 -->
        </div>
      </div>
    </div>
    <transition name="move">
    <div class="shopcart-list" v-show="listShow">
      <div class="list-header">
        <h1 class="title">购物车</h1>
        <span class="empty" @click="clearCart">清空</span>
      </div>
      <div class="list-content" ref="foods">
        <ul>
          <li class="food" v-for="(food) in cartFoods" :key="food.name">
            <span class="name">{{food.name}}</span>
            <div class="price"><span>￥{{food.price}}</span></div>
            <div class="cartcontrol-wrapper">
             <cart-control :food="food"></cart-control>
            </div>
          </li>
        </ul>
      </div>
    </div>
     </transition>
  </div>
  <transition name="fade"> 
  <div class="list-mask" v-show="listShow" @click="toggleShow"></div>
  </transition>
</div>

</template>

<script>
import {MessageBox} from 'mint-ui'
import BScroll from 'better-scroll'
import {mapState,mapGetters} from 'vuex'
import CartControl from '../CartControl/CartControl.vue'
export default{
  data() {
    return {
        isShow:false

     }
  },
  computed:{
      ...mapState({
         cartFoods:state=>state.shop.cartFoods,
          info:state=>state.shop.shop.info || {}
      }),
      ...mapGetters(['totalCount','totalPrice']),
      payClass(){
          const {totalPrice}=this
          const {minPrice}=this.info
          return minPrice>totalPrice?"not-enough":'enough'
      },
      payText(){
          const {totalPrice}=this
          const {minPrice}=this.info
          if(totalPrice===0){
              return `￥${minPrice}元起送`
          }else if(totalPrice<minPrice){
              return `还差￥${minPrice-totalPrice}元起送`
          }else{
              return  `去结算`
          }
      },
      listShow(){
          if(this.totalCount===0){
              this.isShow=false
              return false
          }
          if(this.isShow){
             this.$nextTick(()=>{
                 if(!this.scroll){
                     this.scroll=new BScroll(this.$refs.foods,{
                  click:true
              })
                     
                 }else{
                     this.scroll.refresh()
                 }
                  
             })
          }
          return this.isShow
      }

  },
  methods:{
      toggleShow(){
         if(this.totalCount>0){
              this.isShow=!this.isShow
         }
      },
      clearCart(){
        MessageBox.confirm("确认取消嘛").then(()=>{
          this.$store.dispatch('clearCart')
        })
          
      }

  },
  components:{
    CartControl

 }
  }
 </script>

<style lang="stylus" rel="stylesheet/stylus" scoped>
  @import "../../assets/stylus/mixins.styl"
  .shopcart
    position: fixed
    left: 0
    bottom: 0
    z-index: 50
    width: 100%
    height: 48px
    .content
      display: flex
      background: #141d27
      font-size: 0
      color: rgba(255, 255, 255, 0.4)
      .content-left
        flex: 1
        .logo-wrapper
          display: inline-block
          vertical-align: top
          position: relative
          top: -10px
          margin: 0 12px
          padding: 6px
          width: 56px
          height: 56px
          box-sizing: border-box
          border-radius: 50%
          background: #141d27
          .logo
            width: 100%
            height: 100%
            border-radius: 50%
            text-align: center
            background: #2b343c
            &.highlight
              background: $green
            .icon-shopping_cart
              line-height: 44px
              font-size: 24px
              color: #80858a
              &.highlight
                color: #fff
          .num
            position: absolute
            top: 0
            right: 0
            width: 24px
            height: 16px
            line-height: 16px
            text-align: center
            border-radius: 16px
            font-size: 9px
            font-weight: 700
            color: #ffffff
            background: rgb(240, 20, 20)
            box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.4)
        .price
          display: inline-block
          vertical-align: top
          margin-top: 12px
          line-height: 24px
          padding-right: 12px
          box-sizing: border-box
          border-right: 1px solid rgba(255, 255, 255, 0.1)
          font-size: 16px
          font-weight: 700
          &.highlight
            color: #fff
        .desc
          display: inline-block
          vertical-align: top
          margin: 12px 0 0 12px
          line-height: 24px
          font-size: 10px
      .content-right
        flex: 0 0 105px
        width: 105px
        .pay
          height: 48px
          line-height: 48px
          text-align: center
          font-size: 12px
          font-weight: 700
          &.not-enough
            background: #2b333b
          &.enough
            background: #3190e8
            color: #fff
    .shopcart-list
      position: absolute
      left: 0
      top: 0
      z-index: -1
      width: 100%
      transform translateY(-100%)
      &.move-enter-active,&.move-leave-&.fade-enter-active
        transition all .5s
      &.move-enter,&.move-leave-to
        opacity 0
        transform translateY(0)
      .list-header
        height: 40px
        line-height: 40px
        padding: 0 18px
        background: #f3f5f7
        border-bottom: 1px solid rgba(7, 17, 27, 0.1)
        .title
          float: left
          font-size: 14px
          color: rgb(7, 17, 27)
        .empty
          float: right
          font-size: 12px
          color: rgb(0, 160, 220)

      .list-content
        padding: 0 18px
        max-height: 217px
        overflow: hidden
        background: #fff
        .food
          position: relative
          padding: 12px 0
          box-sizing: border-box
          bottom-border-1px(rgba(7, 17, 27, 0.1))
          .name
            line-height: 24px
            font-size: 14px
            color: rgb(7, 17, 27)
          .price
            position: absolute
            right: 90px
            bottom: 12px
            line-height: 24px
            font-size: 14px
            font-weight: 700
            color: rgb(240, 20, 20)
          .cartcontrol-wrapper
            position: absolute
            right: 0
            bottom: 6px

  .list-mask
    position: fixed
    top: 0
    left: 0
    width: 100%
    height: 100%
    z-index: 40
    backdrop-filter: blur(10px)
    opacity: 1
    background: rgba(7, 17, 27, 0.6)
    &.fade-enter-active, &.fade-leave-active
      transition: all 0.5s
    &.fade-enter, &.fade-leave-to
      opacity: 0
</style>
